Crucial announced it is selling a new type of ram, called "Ballistix," which is compatible with the G5. Crucial describes it as follows: "Crucial Technology, a division of Micron, and one of the world's largest direct memory upgrade providers, today introduces the Crucial Ballistix high-performance memory line, designed specifically for computer gamers and power users seeking maximum system performance and stability at a competitive price-point." You can get a PC3200 512 meg chip with lower latency, specifically CL=2. Would you see any performance advantage from installing this memory over standard brand (CL=3) memory? I assume you would have to replace all your ram to take advantage of it as well.